CN109967850B - Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy - Google Patents
Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy Download PDFInfo
- Publication number
- CN109967850B CN109967850B CN201910330256.1A CN201910330256A CN109967850B CN 109967850 B CN109967850 B CN 109967850B CN 201910330256 A CN201910330256 A CN 201910330256A CN 109967850 B CN109967850 B CN 109967850B
- Authority
- CN
- China
- Prior art keywords
- entropy alloy
- spot welding
- resistance spot
- cocrcufeni high
- cocrcufeni
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/34—Preliminary treatment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses a connecting method of resistance spot welding of a CoCrCuFeNi high-entropy alloy. According to the invention, the metal foils of Ti, Cu, Al and Ag are used as the intermediate solder layers, resistance spot welding is carried out on the CoCrCuFeNi high-entropy alloy base material, and the welded CoCrCuFeNi high-entropy alloy has high shear strength.
Description
Technical Field
The invention relates to a connecting method for resistance spot welding, in particular to a connecting method capable of realizing resistance spot welding of a CoCrCuFeNi high-entropy alloy.
Background
The high-entropy alloy becomes a special alloy system due to the microstructure of the full solid solution phase, and is characterized in that the high-entropy alloy breaks through the design concept that the traditional alloy material is mainly made of a certain alloy element, is prepared by five or more elements with equal atoms, and forms a multi-principal-element alloy system. The multi-principal element system is an alloy system which forms higher mixed entropy and configuration entropy and forms a full solid solution microstructure under the drive of high entropy, so the multi-principal element system is also called as high-entropy alloy. Due to the existence of the full solid solution structure, no brittle metal piece compound is formed, and the integral structure is face-centered cubic or body-centered cubic or the mixture of the face-centered cubic and the body-centered cubic. The special structure leads to the formation of special mechanical properties and physical properties. Therefore, different types of high-entropy alloys show different excellent properties, such as strength, hardness, wear resistance, corrosion resistance, thermal resistance, electric resistance, magnetic properties and the like. Although much research work has been carried out on high-entropy alloys, welding is a common connection mode for engineering application as a structural material application, especially large-scale industrial application and equipment manufacturing, and at present, research work carried out on the aspect of welding of high-entropy alloys is less, and related documents which can be retrieved can be circled. The CoCrCuFeNi serving as the earliest researched high-entropy alloy system has excellent toughness, good strength and wide application prospect. Therefore, the research and development of a connection method aiming at the resistance spot welding of the CoCrCuFeNi high-entropy alloy is a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a connection method for resistance spot welding of a CoCrCuFeNi high-entropy alloy. The method can ensure that the CoCrCuFeNi high-entropy alloy can be effectively connected by a resistance electric welding method in the engineering application process.
The technical scheme of the invention is as follows: a connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy is characterized in that after CoCrCuFeNi high-entropy alloy base metals to be welded are polished and cleaned, metal foils of Ti, Cu, Al and Ag are filled among the base metals to serve as an intermediate layer, and welding is completed after direct-current resistance spot welding.
In the connection method for resistance spot welding of the CoCrCuFeNi high-entropy alloy, the CoCrCuFeNi high-entropy alloy base material to be welded is polished by sand paper, then is cleaned by ultrasonic for 30 minutes and then is dried.
In the connection method of resistance spot welding of the CoCrCuFeNi high-entropy alloy, the Ti, Cu, Al and Ag metal foils are consistent in thickness and 5-30 mu m in thickness, and are polished by sand paper, cleaned by ultrasonic for 30 minutes and dried.
In the foregoing connection method for resistance spot welding of the CoCrCuFeNi high-entropy alloy, the stacking order of the Ti, Cu, Al, and Ag metal foils is: Ti/Cu/Al/Ag, or Ti/Al/Cu/Ag, or Ti/Cu/Ag/Al, or Ti/Ag/Cu/Al.
In the connection method of resistance spot welding of the CoCrCuFeNi high-entropy alloy, the welding current of resistance spot welding is 1-40kA, and the welding time is 100-1000 ms.
The invention has the beneficial effects that: compared with the prior art, the invention uses Ti, Cu, Al and Ag metal foils as intermediate solder layers to perform resistance spot welding on the CoCrCuFeNi high-entropy alloy base material, and the welded CoCrCuFeNi high-entropy alloy has higher shear strength. The applicant tests the shear strength values of the CoCrCuFeNi high-entropy alloys welded in the examples 1, 2 and 3 respectively, each group is tested 10 times, the test results are averaged, and the test results are recorded, which is shown in Table 1.
Table 1 results of performance testing
As can be seen from the table, the mechanical properties of the CoCrCuFeNi high-entropy alloy welded according to examples 1, 2 and 3 reach 0.6 times of the ultimate tensile strength of the parent metal, and therefore, considerable mechanical properties are obtained after the resistance spot welding connection of the invention.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1 of the invention:
two pieces of CoCrCuFeNi high-entropy alloy with the size of 150 multiplied by 100 multiplied by 10 mm are connected by resistance spot welding.
And (3) polishing the surface of the CoCrCuFeNi high-entropy alloy parent metal by using sand paper, cleaning for 30 minutes by using ultrasonic waves, and drying. And (2) polishing Ti, Cu, Al and Ag foils with the thickness of 5 mu m by using sand paper, ultrasonically cleaning for 30 minutes, drying, clamping between two CoCrCuFeNi high-entropy alloy base metals to be welded according to the stacking sequence of Ti/Cu/Al/Ag, placing between electrodes of resistance spot welding, setting the current to be 1kA and the welding time to be 100ms, and cooling to finish welding.
Example 2 of the invention:
two pieces of CoCrCuFeNi high-entropy alloy with the size of 180 multiplied by 100 multiplied by 15 mm are connected by resistance spot welding.
And (3) polishing the surface of the CoCrCuFeNi high-entropy alloy parent metal by using sand paper, cleaning for 30 minutes by using ultrasonic waves, and drying. Polishing Ti, Cu, Al and Ag foils with the thickness of 10 mu m by using sand paper, ultrasonically cleaning for 30 minutes, drying, clamping between two CoCrCuFeNi high-entropy alloy base metals to be welded according to the stacking sequence of Ti/Al/Cu/Ag, placing between electrodes of resistance spot welding, setting the current to be 10kA and the welding time to be 300ms, and cooling to finish welding.
Example 3 of the invention:
two pieces of CoCrCuFeNi high-entropy alloy with the size of 180 multiplied by 100 multiplied by 25 mm are connected by resistance spot welding.
And (3) polishing the surface of the CoCrCuFeNi high-entropy alloy parent metal by using sand paper, cleaning for 30 minutes by using ultrasonic waves, and drying. And (2) polishing Ti, Cu, Al and Ag foils with the thickness of 20 mu m by using sand paper, ultrasonically cleaning for 30 minutes, drying, clamping between two CoCrCuFeNi high-entropy alloy base metals to be welded according to the stacking sequence of Ti/Cu/Ag/Al, placing between electrodes of resistance spot welding, setting the current to be 20kA and the welding time to be 500ms, and cooling to finish welding.
Example 4 of the invention:
two pieces of CoCrCuFeNi high-entropy alloy with the size of 180 multiplied by 100 multiplied by 35 mm are connected by resistance spot welding.
And (3) polishing the surface of the CoCrCuFeNi high-entropy alloy parent metal by using sand paper, cleaning for 30 minutes by using ultrasonic waves, and drying. Polishing Ti, Cu, Al and Ag foils with the thickness of 25 mu m by using sand paper, ultrasonically cleaning for 30 minutes, drying, clamping between two base materials to be welded according to the stacking sequence of Ti/Ag/Cu/Al, placing between electrodes for resistance welding, setting the current to be 40kA and the welding time to be 1000ms, and cooling to finish welding. Mechanical property test experiments show that the shear strength after welding reaches 252 MPa.
Example 5 of the invention:
two pieces of CoCrCuFeNi high-entropy alloy with the size of 180 multiplied by 100 multiplied by 8 mm are connected by resistance spot welding.
And (3) polishing the surface of the CoCrCuFeNi high-entropy alloy parent metal by using sand paper, cleaning for 30 minutes by using ultrasonic waves, and drying. Polishing Ti, Cu, Al and Ag foils with the thickness of 8 mu m by using sand paper, ultrasonically cleaning for 30 minutes, drying, clamping between two CoCrCuFeNi high-entropy alloy base metals to be welded according to the stacking sequence of Ti/Ag/Cu/Al, placing between electrodes of resistance spot welding, setting the current to be 18kA and the welding time to be 600ms, and cooling to finish welding. The mechanical property test experiment shows that the shear strength after welding reaches 250 MPa.
Claims (5)
1. A connection method of resistance spot welding of CoCrCuFeNi high-entropy alloy is characterized in that: after polishing and cleaning CoCrCuFeNi high-entropy alloy base metals to be welded, filling Ti, Cu, Al and Ag metal foils between the base metals as an intermediate layer, and completing welding after direct-current resistance spot welding.
2. The method for connecting the CoCrCuFeNi high-entropy alloy by resistance spot welding according to claim 1, is characterized in that: and polishing the CoCrCuFeNi high-entropy alloy base metal to be welded by using sand paper, then ultrasonically cleaning for 30 minutes, and then drying.
3. The method for connecting the CoCrCuFeNi high-entropy alloy by resistance spot welding according to claim 1, is characterized in that: the Ti, Cu, Al and Ag metal foils are consistent in thickness and 5-30 mu m in thickness, and are polished by abrasive paper, cleaned by ultrasonic for 30 minutes and dried.
4. The method for connecting the CoCrCuFeNi high-entropy alloy by resistance spot welding according to claim 1, is characterized in that: the stacking sequence of the Ti, Cu, Al and Ag metal foils is as follows: Ti/Cu/Al/Ag, or Ti/Al/Cu/Ag, or Ti/Cu/Ag/Al, or Ti/Ag/Cu/Al.
5. The method for connecting the CoCrCuFeNi high-entropy alloy by resistance spot welding according to claim 1, is characterized in that: the welding current of resistance spot welding is 1-40kA, and the welding time is 100-1000 ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330256.1A CN109967850B (en) | 2019-04-23 | 2019-04-23 | Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330256.1A CN109967850B (en) | 2019-04-23 | 2019-04-23 | Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109967850A CN109967850A (en) | 2019-07-05 |
| CN109967850B true CN109967850B (en) | 2021-02-05 |
Family
ID=67085953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910330256.1A Active CN109967850B (en) | 2019-04-23 | 2019-04-23 | Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109967850B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11339817B2 (en) | 2016-08-04 | 2022-05-24 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
| US11318566B2 (en) | 2016-08-04 | 2022-05-03 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
| US11511375B2 (en) | 2020-02-24 | 2022-11-29 | Honda Motor Co., Ltd. | Multi component solid solution high-entropy alloys |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590574B (en) * | 2009-06-29 | 2011-09-28 | 西安理工大学 | High-entropy alloy brazing filler metal for welding TA2 and 0Cr18Ni9Ti and preparation method thereof |
| CN103252568B (en) * | 2013-04-23 | 2016-01-20 | 上海工程技术大学 | A kind of for filling spot welding stainless steel high-entropy alloy powder and the stainless process of a kind of high-entropy alloy powder filling spot welding |
| US10668566B2 (en) * | 2016-01-27 | 2020-06-02 | H.C. Starck Inc. | Fabrication of high-entropy alloy wire and multi-principal element alloy wire |
| US10640854B2 (en) * | 2016-08-04 | 2020-05-05 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
| CN108747006B (en) * | 2018-06-12 | 2020-07-14 | 贵州理工学院 | Laser welding method of CoCrCuFeNi high-entropy alloy |
-
2019
- 2019-04-23 CN CN201910330256.1A patent/CN109967850B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109967850A (en) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109967850B (en) | Connection method for resistance spot welding of CoCrCuFeNi high-entropy alloy | |
| CN109967852B (en) | Diffusion welding connection method for CoCrCuFeNi high-entropy alloy | |
| CN109909643B (en) | Medium-entropy alloy material for welding and welding method | |
| CN101254572B (en) | Method for diffusion welding titanium alloy and copper alloy using niobium central layer | |
| US10115655B2 (en) | Heat dissipation substrate and method for producing heat dissipation substrate | |
| Ting et al. | Influences of different filler metals on electron beam welding of titanium alloy to stainless steel | |
| CN102059449B (en) | Diffusion welding method of tungsten alloy and tantalum alloy at low temperature | |
| CN102218592A (en) | Diffusion welding method of titanium or titanium alloy and stainless steel | |
| CN110405300B (en) | Method for preparing high-strength AlCoCrFeNi high-entropy alloy joint by adopting Ni-based brazing filler metal | |
| CN113399861B (en) | Copper-nickel-based welding wire for copper-steel transition layer melting-brazing and preparation method thereof | |
| CN109967812B (en) | Brazing connection method of CoCrCuFeNi high-entropy alloy | |
| CN107414279B (en) | A kind of connection method for slab TiNi alloy and titanium alloy dissimilar materials | |
| CN104014922A (en) | Fast-diffusion welding method of hard alloy and steel | |
| CN102218594A (en) | Low-temperature diffusion welding method for molybdenum alloy and copper alloy | |
| CN106181000A (en) | A kind of tungsten alloy and the method for attachment of molybdenum alloy | |
| CN113732467B (en) | Composite intermediate layer for tungsten/steel connecting piece and diffusion welding method | |
| CN111318778B (en) | Stepwise brazing method for toughening titanium alloy and high-temperature alloy brazed joint | |
| CN109971988B (en) | Ultrahigh-strength copper-titanium alloy and preparation method thereof | |
| CN110900037B (en) | Brazing filler metal and method for welding molybdenum-rhenium alloy and steel | |
| Narendranath et al. | Effect of FSW on microstructure and hardness of AA6061/SiC/fly ash MMCs | |
| CN113774374A (en) | Steel-based titanium coating and preparation method and application thereof | |
| CN113399860A (en) | Nickel-based welding wire for copper-steel composite plate transition layer and preparation method thereof | |
| CN111331280B (en) | High-entropy alloy preform and TA2/0Cr18Ni9 fusion welding method | |
| CN111687530B (en) | Method for compounding hydrogen absorption expansion substance and other materials | |
| JP6333268B2 (en) | Layer composite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |